Visual alert device



FIG. 1 is a front isometric view of a visual alert device;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The dashed lines are for the purpose of illustrating portions of the visual alert device that form no part of the claimed design. 

CLAIM We claim the ornamental design for a visual alert device, as shown and described. 